The two tone color with no roof scoops put this as an early race. Thanks again Joel Driscoll.
Reliable and Fast
You can't win if you don't finish. The car was very reliable. That might be the Cannon Mk2 Crosley next to the 'coupe'.
The tubular front axle was basically an anti-roll bar along with a high front spring mount which made the car corner deceptively 'flat'. The majority of the mass of the engine was below the roll center.
Jim's connection to the Indianapolis cars got him some Offenhauser parts. (And speedway tires that they had retreaded.) Specifically a tall block and short stroke which got the compression ratio down enough to run gasoline. Then they layed it down flat to get the weight low.